/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2001 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.test.debugger.Util;

import org.openide.debugger.Debugger;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;

/**
 * Listener for changes of the state of the debugger.
 *
 * @author Jan Stola
 */
public class DebuggerStateListener implements PropertyChangeListener {
    /** State this listener is looking for. */
    private int state;
    
    /**
     * Creates listener which is looking for the debugger stop.
     */
    public DebuggerStateListener() {
        this(Debugger.DEBUGGER_STOPPED);
    }
    
    /**
     * Creates listener which is looking for the given state.
     *     
     * @param state state this listener is looking for.
     */
    public DebuggerStateListener(int state) {
        this.state=state;
    }
    
    public void propertyChange (PropertyChangeEvent e) {
        String s = e.getPropertyName();
        if ((s == null)||!s.equals(org.openide.debugger.Debugger.PROP_STATE)) return;
        int now;
        if (e.getNewValue()==null) {
            now=DebuggerOpenAPI.getDebugger().getState();
        } else {
            now=((Integer)e.getNewValue()).intValue();
        }
        if ((now!=state)&&(now!=Debugger.DEBUGGER_NOT_RUNNING)) return;
// Marek        System.out.println("State < " + now + " >");
        synchronized (this) {
            notify ();
        }
    }
    
}